DenButsu

09-24-2010, 07:44 PM

Here are some resources where you can find the stats themselves as well as statistical analysis blogs, primers, essays, and books:

Websites:

Basketball-Reference (http://www.basketball-reference.com/)

82games.com (http://www.82games.com/)

Basketball Value (http://www.basketballvalue.com/index.php)

HoopData (http://hoopdata.com/default.aspx)

Hardwood Paroxysm (http://www.hardwoodparoxysm.com/)

Basketball Prospectus (http://www.basketballprospectus.com/)

APBRmetrics (http://sonicscentral.com/apbrmetrics/index.php)

NBAstuffer.com (http://www.nbastuffer.com/)

PopcornMachine.net (http://popcornmachine.net/)

Basketball Geek (http://www.basketballgeek.com/data/)

Stats by Numbers (http://statsbynumbers.com/about/)

Team Rankings (http://www.teamrankings.com/nba/stats/)

Basketball-Analysis (http://www.basketball-analysis.com/)

twitter:

http://twitter.com/tomhaberstroh (http://twitter.com/tomhaberstroh)

http://twitter.com/Hoopdata (http://twitter.com/Hoopdata)

http://twitter.com/bball_ref (http://twitter.com/bball_ref)

http://twitter.com/HPbasketball (http://twitter.com/HPbasketball)

http://twitter.com/basketballvalue (http://twitter.com/basketballvalue)

http://twitter.com/johnhollinger (http://twitter.com/johnhollinger)

http://twitter.com/dmorey (http://twitter.com/dmorey)

Books:

Basketball On Paper, by Dean Oliver (http://www.basketballonpaper.com/)

Primers, Glossaries, & Some Introductory Advanced Stats:

And here are a few good elementary primers on some of the main advanced metrics.

Click here for The Basketball Notebook Stats Primer (http://basketballnotebook.blogspot.com/2005/12/basketball-notebook-stats-primer.html) for a good overview.

Two great glossary/dictionary type references can be found at the following links:

The BBR Blog-tionary (http://www.basketball-reference.com/blog/?p=1120)

-and-

an Advanced Statistics Glossary (http://sonicscentral.com/apbrmetrics/viewtopic.php?t=2527) at APBRmetrics

Here, from Ben Q Rock at the Orlando Pinstriped Post, are a few more detailed primers which introduce some specific stats and concepts:

Advanced Metrics Handbook, Vol. 1: Effective Field Goal Percentage (http://www.orlandopinstripedpost.com/2010/8/11/1617132/advanced-metrics-handbook-vol-1)

The formula:

(FG + 0.5 * 3P) / FGA

Advanced Metrics Handbook, Vol. 2: True Shooting Percentage (http://www.orlandopinstripedpost.com/2010/8/16/1624997/advanced-metrics-handbook-vol-2)

The formula:

Points / (2 * (FGA + 0.44 * FTA))

Advanced Metrics Handbook, Vol. 3: Pace (http://www.orlandopinstripedpost.com/2010/9/2/1662377/advanced-metrics-handbook-vol-3)

The formula:

0.96 * (FGA + 0.44 * FTA + TO - OReb

From another thread, here Chronz' explanation of why that ".44" number is in the TS% formula:

Let me word it differently, if 44% of each free throw cost a possession then 1 pair of free throws take .88 right. The other 12% come from either AND1's technicals, flagrants, clear-path fouls, or as the third part of a shooting foul from behind the three-point arc.

Mathematically speaking, you start with a FTA = 1/2 a possession or 0.5, then you deduct for those 12% aforementioned sequences, where 0.5 * 0.12 = 0.06 and 0.5 - 0.06 = 0.44

And also from another thread, here's patsSOXknicks' breakdown of the difference between assist % and assist ratio:

Basketball-reference has Ast% vs. what they have on ESPN and Hoopdata with Assist Ratio. These are different statistics and they do have different meanings.

From basketball-reference

AST%

Assist Percentage (available since the 1964-65 season in the NBA); the formula is 100 * AST / (((MP / (Tm MP / 5)) * Tm FG) - FG). Assist percentage is an estimate of the percentage of teammate field goals a player assisted while he was on on the floor.

From ESPN

AST: Assist Ratio - the percentage of a player's possessions that ends in an assist. Assist Ratio = (Assists x 100) divided by [(FGA + (FTA x 0.44) + Assists + Turnovers]

Both of these stats are better then assists per game as that completely ignores pace.

A look at the league leaders:

http://www.basketball-reference.com/leagues/NBA_2010_leaders.html

http://insider.espn.go.com/nba/hollinger/statistics?sort=assistRatio&action=login&appRedirect=http%3a%2f%2finsider.espn.go.com%2fnba %2fhollinger%2fstatistics%3fsort%3dassistRatio

Pretty different. Why? Well upon closer look, the guys with really high Ast% have higher USG% too compared to the guys with just high Assist Ratios. Lebron is not even on the league leaders for Assist Ratio but he's 5th in Ast%- it's because he's 2nd in the NBA in usage rate. So he's going to Ast on a really high percentage of his teams FG because he's used more (and is obviously a good passer too) then say someone like Jason Kidd who doesn't have everything run through him all the time. So for the possessions that Jason Kidd is involved in, a very high % of them end in an assist but the % of the teams FG that he assisted won't be as high since his USG rate isn't as high and because Ast% is based on the minutes you're on the floor, not on the possessions in which you're involved in.

---------------------------------

If you know of any additional websites, twitterers, books, etc. which you think should be added to the list above, please post them in this thread. :cheers:

Websites:

Basketball-Reference (http://www.basketball-reference.com/)

82games.com (http://www.82games.com/)

Basketball Value (http://www.basketballvalue.com/index.php)

HoopData (http://hoopdata.com/default.aspx)

Hardwood Paroxysm (http://www.hardwoodparoxysm.com/)

Basketball Prospectus (http://www.basketballprospectus.com/)

APBRmetrics (http://sonicscentral.com/apbrmetrics/index.php)

NBAstuffer.com (http://www.nbastuffer.com/)

PopcornMachine.net (http://popcornmachine.net/)

Basketball Geek (http://www.basketballgeek.com/data/)

Stats by Numbers (http://statsbynumbers.com/about/)

Team Rankings (http://www.teamrankings.com/nba/stats/)

Basketball-Analysis (http://www.basketball-analysis.com/)

twitter:

http://twitter.com/tomhaberstroh (http://twitter.com/tomhaberstroh)

http://twitter.com/Hoopdata (http://twitter.com/Hoopdata)

http://twitter.com/bball_ref (http://twitter.com/bball_ref)

http://twitter.com/HPbasketball (http://twitter.com/HPbasketball)

http://twitter.com/basketballvalue (http://twitter.com/basketballvalue)

http://twitter.com/johnhollinger (http://twitter.com/johnhollinger)

http://twitter.com/dmorey (http://twitter.com/dmorey)

Books:

Basketball On Paper, by Dean Oliver (http://www.basketballonpaper.com/)

Primers, Glossaries, & Some Introductory Advanced Stats:

And here are a few good elementary primers on some of the main advanced metrics.

Click here for The Basketball Notebook Stats Primer (http://basketballnotebook.blogspot.com/2005/12/basketball-notebook-stats-primer.html) for a good overview.

Two great glossary/dictionary type references can be found at the following links:

The BBR Blog-tionary (http://www.basketball-reference.com/blog/?p=1120)

-and-

an Advanced Statistics Glossary (http://sonicscentral.com/apbrmetrics/viewtopic.php?t=2527) at APBRmetrics

Here, from Ben Q Rock at the Orlando Pinstriped Post, are a few more detailed primers which introduce some specific stats and concepts:

Advanced Metrics Handbook, Vol. 1: Effective Field Goal Percentage (http://www.orlandopinstripedpost.com/2010/8/11/1617132/advanced-metrics-handbook-vol-1)

The formula:

(FG + 0.5 * 3P) / FGA

Advanced Metrics Handbook, Vol. 2: True Shooting Percentage (http://www.orlandopinstripedpost.com/2010/8/16/1624997/advanced-metrics-handbook-vol-2)

The formula:

Points / (2 * (FGA + 0.44 * FTA))

Advanced Metrics Handbook, Vol. 3: Pace (http://www.orlandopinstripedpost.com/2010/9/2/1662377/advanced-metrics-handbook-vol-3)

The formula:

0.96 * (FGA + 0.44 * FTA + TO - OReb

From another thread, here Chronz' explanation of why that ".44" number is in the TS% formula:

Let me word it differently, if 44% of each free throw cost a possession then 1 pair of free throws take .88 right. The other 12% come from either AND1's technicals, flagrants, clear-path fouls, or as the third part of a shooting foul from behind the three-point arc.

Mathematically speaking, you start with a FTA = 1/2 a possession or 0.5, then you deduct for those 12% aforementioned sequences, where 0.5 * 0.12 = 0.06 and 0.5 - 0.06 = 0.44

And also from another thread, here's patsSOXknicks' breakdown of the difference between assist % and assist ratio:

Basketball-reference has Ast% vs. what they have on ESPN and Hoopdata with Assist Ratio. These are different statistics and they do have different meanings.

From basketball-reference

AST%

Assist Percentage (available since the 1964-65 season in the NBA); the formula is 100 * AST / (((MP / (Tm MP / 5)) * Tm FG) - FG). Assist percentage is an estimate of the percentage of teammate field goals a player assisted while he was on on the floor.

From ESPN

AST: Assist Ratio - the percentage of a player's possessions that ends in an assist. Assist Ratio = (Assists x 100) divided by [(FGA + (FTA x 0.44) + Assists + Turnovers]

Both of these stats are better then assists per game as that completely ignores pace.

A look at the league leaders:

http://www.basketball-reference.com/leagues/NBA_2010_leaders.html

http://insider.espn.go.com/nba/hollinger/statistics?sort=assistRatio&action=login&appRedirect=http%3a%2f%2finsider.espn.go.com%2fnba %2fhollinger%2fstatistics%3fsort%3dassistRatio

Pretty different. Why? Well upon closer look, the guys with really high Ast% have higher USG% too compared to the guys with just high Assist Ratios. Lebron is not even on the league leaders for Assist Ratio but he's 5th in Ast%- it's because he's 2nd in the NBA in usage rate. So he's going to Ast on a really high percentage of his teams FG because he's used more (and is obviously a good passer too) then say someone like Jason Kidd who doesn't have everything run through him all the time. So for the possessions that Jason Kidd is involved in, a very high % of them end in an assist but the % of the teams FG that he assisted won't be as high since his USG rate isn't as high and because Ast% is based on the minutes you're on the floor, not on the possessions in which you're involved in.

---------------------------------

If you know of any additional websites, twitterers, books, etc. which you think should be added to the list above, please post them in this thread. :cheers: